(N)TSCGEWOEU SB 6/10 kV Compact Mining Trailing Cable is an optimized-wall medium-voltage rubber feeder based on DIN VDE 0250-813 for space- and payload-constrained excavators, tunnel boring machines (TBMs), jumbo drills, and mobile crushers. Using triple-extruded high-dielectric 3GI3 EPR/HEPR insulation and a streamlined double elastomer sheath, the SB construction reduces outer diameter by 8-12% and cable mass by 12-16% while retaining full 6/10 kV (Um = 12 kV, 17 kV AC test) dielectric safety.
1. Application Scope & MV Mining Cable Variant Selection
In underground tunneling and open-pit mining, retrofitting higher-power 6.6 kV or 10 kV drives onto existing machinery frequently hits storage-drum flange or cable-cassette limits. (N)TSCGEWOEU SB 6/10 kV solves volume bottlenecks without stepping down copper ampacity:
- Tunnel Boring Machines (TBMs) & Underground Jumbo Drills: Fits 15-25% longer single-piece 6/10 kV feeder runs inside TBM advancing cassettes and electro-hydraulic drill reels, cutting underground HV coupler stations.
- Open-Pit Shovels, Draglines, Spreaders & Mobile Crushers: Reduces suspended catenary load on cable-handling booms, skids, and spreader bridges.
- Tight Deflection Chutes & Skid Substations: Smaller outside diameter lowers minimum
10 × ODtrailing bend clearance by35-65 mmacross mid-to-large cross-sections.
| TEBAOFLEX 6/10 kV Variant | Wall & Braid Architecture | Primary Engineering Advantage |
|---|---|---|
| (N)TSCGEWOEU SB 6/10 kV (This Page) | Optimized compact EPR + 5GM5 double sheath (optional braid) | 8-12% smaller OD & 12-16% lighter trailing feeder for compact cassettes, boats & drills |
| (N)TSCGEWOEU 3+3 Standard | Full 3.4 mm VDE 0250-813 EPR + heavy double sheath | Maximum radial crush & rock-impact buffer for severe open-pit bench dragging |
| (N)TSCGEWOEU MT PLUS | Compact wall + integrated synthetic anti-torsion braid | High-speed motorized drum reeling up to 120-180 m/min with reduced drum torque |
| R-(N)TSCGEWÖU Reeling | Full VDE 0250-813 wall + aramid/polyester anti-torsion braid | Heavy-duty vertical/horizontal crane, stacker-reclaimer & ship-loader reeling |
2. Cable Construction (Symmetric 3+3 Optimized-Wall Cutaway)
Verified against the TEBAOFLEX stepped factory samples (#1161 / #1162) and 3D cutaway (#3452), the symmetric 3+3 architecture eliminates unbalanced zero-sequence magnetic fields:
2.6-2.8 mm compact wall vs. 3.4 mm standard VDE table), 100% partial-discharge and 17 kV AC routine-tested.3+3 core layup against corkscrewing.Termination & Gland Sizing Note: Because (N)TSCGEWOEU SB has a 3-6 mm smaller core and jacket diameter than standard (N)TSCGEWOEU of identical copper cross-section, always select MV cold-shrink stress cones and compression glands using the exact core-over-insulation and outer-sheath millimeter ranges on the TEBAOFLEX build drawing.
3. Electrical, Thermal & Mechanical Parameters
| Parameter | Engineering Value | Standard / Test Basis |
|---|---|---|
| Rated Voltage (U0/U) & Max AC (Um) | 6/10 kV (Max operating AC 12 kV; Max DC 18 kV) | DIN VDE 0250-813 / IEC 60502-2 |
| 5-Minute AC Routine Test Voltage | 17 kV AC (50 Hz) | DIN VDE 0472 / VDE 0250-813 |
| Conductor Temperature Limits | +90°C max continuous | +250°C short-circuit (5 s) | 3GI3 EPR thermal class |
| Ambient Operating Temperature | Trailing / Flexing: -25°C to +80°C (-40°C arctic compound optional) | 5GM5 heavy elastomer sheath |
| Permissible Tensile Load | 15 N/mm² of total phase copper cross-section (trailing/static) | DIN VDE 0298-3 |
| Minimum Bending Radius | Trailing / Deflection: 10 × OD | Fixed: 6 × OD | DIN VDE 0298-3 |
| Oil, Water & Flame Resistance | Oil-resistant (EN 60811-404), mine-water resistant, flame-retardant | IEC 60332-1-2 |
4. (N)TSCGEWOEU SB 6/10 kV vs. Standard VDE 0250-813 Dimensional Schedule
Side-by-side comparison quantifying exact diameter and mass reductions achieved by the SB compact 6/10 kV design across 25 mm² to 185 mm²:
| Part Code | Core Schedule (mm²) | SB Compact OD (mm) | Std. 3+3 OD (mm) | SB Approx. Mass (kg/km) | Std. 3+3 Mass (kg/km) | Max Pull 15 N/mm² (N) | Ref. Ampacity 30°C (A) |
|---|---|---|---|---|---|---|---|
NTSC-SB-6KV-3X25 | 3×25 + 3×25/3 | 36.8 | 41.5 | 1,980 | 2,380 | 1,125 N | 131 A |
NTSC-SB-6KV-3X35 | 3×35 + 3×25/3 | 39.2 | 44.0 | 2,390 | 2,820 | 1,575 N | 162 A |
NTSC-SB-6KV-3X50 | 3×50 + 3×25/3 | 42.6 | 47.5 | 2,990 | 3,520 | 2,250 N | 202 A |
NTSC-SB-6KV-3X70 | 3×70 + 3×35/3 | 46.8 | 52.0 | 3,840 | 4,460 | 3,150 N | 250 A |
NTSC-SB-6KV-3X95 | 3×95 + 3×50/3 | 51.4 | 57.0 | 4,890 | 5,620 | 4,275 N | 301 A |
NTSC-SB-6KV-3X120 | 3×120 + 3×70/3 | 56.2 | 62.0 | 5,920 | 6,770 | 5,400 N | 352 A |
NTSC-SB-6KV-3X150 | 3×150 + 3×70/3 | 60.4 | 66.5 | 6,980 | 7,960 | 6,750 N | 404 A |
NTSC-SB-6KV-3X185 | 3×185 + 3×95/3 | 65.0 | 71.5 | 8,380 | 9,500 | 8,325 N | 461 A |
5. Frequently Asked Engineering Questions
Can (N)TSCGEWOEU SB 6/10 kV be supplied with an anti-torsion braid for drum reeling?
Yes. While standard trailing SB cables omit the inter-sheath braid for maximum coiling flexibility in cable boats and cassettes, TEBAOFLEX can integrate a vulcanized aramid/polyester anti-torsion braid between the inner and outer sheaths when your TBM or drill reel imposes torsional twist (up to ±100°/m).
Should we specify bare copper or tinned copper Class 5 conductors?
Our stepped stock samples illustrate bright bare Class 5 copper (preferred for welded or hex-crimp MV lugs in dry/neutral quarries), while Class 5 tinned copper is supplied on request for high-sulfur coal mines, potash shafts, and coastal dredging.
Do you also build ICEA SHD-GC and 300 m submersible MV mining cables?
Yes. Compare North American SHD-GC 2-25 kV Trailing Cable, deep-water (N)TSCGECEWOEU 6/10 kV 300m Submersible Cable, and our full Mining & Tunneling Cables range.
Request a 6/10 kV (N)TSCGEWOEU SB Compact Cable Proposal
Share your machine type (TBM, jumbo drill, shovel, or crusher), conductor schedule, cassette/drum dimensions, bare or tinned copper preference, and required length for an engineering datasheet and quote.
